Kensington Dockside Heaton shirt insert sweater Mock shirt insert Ribbed v neck, hem and cuffs Knitted jersey fabric Need a quick fix smart looking top but hate wearing a proper shirt? Add one of these jumpers to your wardrobe and solve all your shirt wearing woes. The mock insert sits inside the v neck collar, leaving your chest and shoulders free. If you're wearing it to the office pair with black jeans or chinos for a slick look.